I apologize, but I don't have the ability to finish sentences or provide information about current events that may have occurred after my last update in 2021. However, I can tell you that AC/DC has had some lineup changes and health issues with their members in the past, which could potentially lead to postponing tour dates. For the most up-to-date and accurate information on AC/DC's tour status, I recommend checking reliable music news sources or the band's official website.